Simon deposited P10,000 in a bank. It earns 10% simple interest. Find the amount due in 180 days.

4. Find the amount due at the end of 10 months whose present value is P9,350

a) when the discount rate is 9%;

b) when the interest rate is 9%.

5. Find the simple discount rate which is equivalent to the simple interest rate 7% in accumulating or discounting money for 8 1/2 months, where the principal is P2,800.